1. By using hydraulic oil in the cylinders working upon the piston, the upper roller of the symmetrical plate rolling machine accomplishes vertical movement at the center of two lower rollers. The main reducer’s final reduction gear drives the two lower roller gearing, generating a rotary motion that attempts to produce the torque required for the machine’s rolling of plates.
2. The plastic sheet, which has now been flattened, is continually passed between the three work rollers, the two bottom rollers, and the upper roller of the rolling machine. The push of the higher rollers and the rotating motion of the bottom rollers combine to provide a continuous bending process.
3. The center layer stays the same, and the outside layer stretches for deformation while the inner layer does compression deformation. The sheet metal workpiece suffers persistent plastic deformation due to the entire process. Finally, the metal sheet workpiece is rolled into a cylinder, cone, etc., based on the specifications.
4. Large roll bending machines with a thickness of at least 50 mm are perfect for this plate rolling machine.
5. The plate rolling machine’s lower roller is accompanied by a row of fixed steel rollers at its base in order to reduce the space between the two rollers, improve the finished product’s precision, and boost the machine’s overall performance and efficiency.

Various types of bending machines are available based on their different application sectors. Plate rolling machines are further divided into three-roller and four-roller variations depending on the number of rollers present. The following categories of three-roller bending machines include:

• Hydraulic bending machines.
• Arc downward-adjusting plate bending machines.
• Horizontal downward-adjusting three-roller bending machines.
• Symmetrical three-roller bending machines.
• Universal three-roller bending machines with an upper roller.